Set of key buttons for a communicator



FIG. 1 is a front view of a set of key buttons for a communicator showing my new design in the environment of a keypad; and,

FIG. 2 is a perspective view thereof.

The broken line showing the various disclaimed regions in the figures is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a set of key buttons for a communicator, as shown and described. 